Chem2 hw2 - Yoon, Seong Meen Homework 2 Due: Sep 18 2007,...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Yoon, Seong Meen Homework 2 Due: Sep 18 2007, 11:00 am Inst: James Holcombe 1 This print-out should have 25 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points The temperature at which water boils can be increased by adding some solute, like ethylene glycol. This is known as a colligative property. 1. True 2. False 002 (part 1 of 1) 10 points The colligative effects of 1 molal sugar solu- tion would be ? 1 molal sodium chloride solution. 1. greater than 2. the same as 3. less than 003 (part 1 of 1) 10 points The vapor pressure of a volatile component in a solution decreases as its mole fraction decreases. This is known as 1. Braggs Law. 2. Henrys Law. 3. Raoults Law. 4. LeChateliers Principle. 004 (part 1 of 3) 10 points Consider the following pressure diagram for a binary liquid containing A and B. 1 x A 70 torr 20 torr If 350 g of A (70 g / mol) and 1100 g of B (110 g / mol) are mixed, what is the vapor pressure of B? 1. 70 torr 2. 46 torr 3. 20 torr 4. 6 torr 5. 53 torr 005 (part 2 of 3) 10 points What is the corresponding vapor pressure of A? 1. 70 torr 2. 53 torr 3. 20 torr 4. 6 torr 5. 46 torr 006 (part 3 of 3) 10 points What is the corresponding total vapor pres- sure? 1. 53 torr 2. 70 torr 3. 6 torr Yoon, Seong Meen Homework 2 Due: Sep 18 2007, 11:00 am Inst: James Holcombe 2 4. 46 torr 5. 20 torr 007 (part 1 of 1) 10 points 1,1-Dichloroethane (CH 3 CHCl 2 ) has a va- por pressure of 228 Torr at 25 C; at the same temperature, 1,1-dichlorotetrafluoroethane (CF 3 CCl 2 F) has a vapor pressure of 79 Torr....
View Full Document

Page1 / 4

Chem2 hw2 - Yoon, Seong Meen Homework 2 Due: Sep 18 2007,...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online